POWER QUALITY IMPROVEMENT USING DYNAMIC VOLTAGE RESTORER WITH SLIDING MODE CONTROL

Abstract

Customers in sensitive industries usually place a higher value on Power Quality (PQ). The potential
huge financial losses that vital industrial loads can incur as a result of PQ problems have caught the attention of
both consumers and power corporations. Voltage dips and spikes are the most common and severe symptoms of
power quality problems in a secondary distribution system. To get rid of voltage dips and spikes, you need a
dynamic Custom Power Device (CPD), and one such device is the Dynamic Voltage Restorer (DVR). Quick,
flexible, efficient, and ever-changing, it works wonders. Its performance is primarily controlled by preset-type
Voltage Source Converters (VSCs). This study develops a fused control mechanism for the DVR's VSC, which
is based on Sliding Mode Control (SMC), to mitigate the effects of voltage spikes and dips. While both classic
SMC and RTA solve the chattering issue, conventional SMC maintains its other benefits including durability,
faster reaction time, and insensitivity to load fluctuations. Using the MATLAB/Simulink SimPowerSystem tool,
we tested how well the suggested control approach worked. Every single simulation yielded a Total Harmonic
Distortion (THD) value below 5%.